Motion-picture projecting apparatus



June 1 1926.

- 1,587,415 E. L. V. REBILLON ET AL MOTION PICTURE PROJECTING APPARATUSFiled Oct. 22. 1923 4 Sheets-Sheet 1 Fi .1 1 Fig.2

June 1 1926. 1,587,415

- E. L. V. REBILLON ET AL MOTION PICTURE PROJECTING APPARATUS Filed Oct.22, 1923 4 Sheets-Sheet 2 June 1 ,19ze, 1,587,415

E. L. V. REBILLON ET AL MOTION PICTURE PROJECTING APPARATUS Filed Oct22. 1923 4 Sheets-Sheet 5 I NVENTUHS: frnesz [0M1]! VzbzorZeZzY/vwanZfiene /QZ2W/ 7 in M ATTUP NEY Patented June 1, 1926.

FIRNEST LOUIS VICTOR REBILLON.

OF MONTESSON. AND.RENE ADAM. OF PARIS.

FRANCE.

MOTION-PICTURE PBOJECTING APPARATUS.

Application filed October 22, i923, Serial No Up to now, in the majorityof motion picture projectors used, the reels, one of which receives thefilm before its passage into the projector, while the other receives thefilm 6 after its passage through the said projector,

are arranged in one and the same plane; the film, in coming from thefeeding reel, passing directly through the apparatus and being wound onthe receiving reel gene-rally arranged below.

This invention relates to a projector in which the feeding and receivingrolls are done away with and replaced by simple cores without sides orflanges, one of which is "arranged against the right hand wall of thecasing of the apparatus, and the otherv against the left hand wall ofthe casing, all

the other parts being enclosed in, the said casing. u

The film coming from the feeding core, forms a natural enlarged loop inorder to pass into'the apparatus and to be wound on the receiving core.

This arrangement of the two feeding and receiving cores relatively tothe casing containing all the parts of the projector, with the formationof a continuous enlarged loop between the two cores, constitutes one ofthe characteristic features of the invention.

. As will be seen byexamining the following description, the inventionis characterized at the same time by other important points which willbe better understood with reference to the accompanying drawings inwhich v Figure 1 is a side elevation of the apparatus shown in frontelevation in Figure 2. L Figure 3 is a-second side elevation showin theopposite side to that in Figure 1.

igure 4 shows the apparatus on an enlarged scale in verticallongitudinal section.

Figure 5 is ,a. vertical cross section tiff-the same.

Finally, Figures 6 and 7 are detail views of the claw holder enablingthe filmto be advanced by jerks or intermittently. As will be seen fromthe drawings, all the active parts of the apparatus other than thereceiving and feeding cores and the driving rollers, are enclosed in acasing a which can be mounted by means of any suitable pivoted joint bon a supporting leg c for the purpose of enabling it to assume 670,098,and in France December 30, 1922.

easily and instantaneously any suitable position.

At one of the sides of the casing is the feeding core (2 on which iswound the film before its passage through the apparatus.

It is a simple core of wood or other material, without any flanges orsides, and it is thewall of the casing a that constitutes at one sidethe side cover or rflange of the core.

At the other side, no flange or side cover is required because of thedirection of the pull exercised on the film. Nevertheless, by way ofprecaution, a finger d holding the film in place could be mounted on thespindle of the core.

At e is arranged a driving roller or drum which, by means of the drivinggear described further on, unwinds the filmfrom the feedingcore.

' The film f thereupon forms an upper loop and then descends through theapparatus. It comes out at the bottom portion of the apparatus, andafter having formed a bottom loop,-is exposed to the action of a seconddriving roller or drum e in order to be finally wound on the core a!similar to. the cored and, if necessary, comprising, like the core d, aholding finger d. these conditions, the film tends to take a perfectlynatural or normal pathv which moreover it follows owing to itsinclination to begome wound upon itself.

All the inner parts of the apparatus, shown in Figures 47, will be nowexamined in detail: these parts make possible the intermittent movementof the film in the interior of the casing.

At g, in the centre of the casing, is mounted a shaft which can berotated by hand,

by means of ahandle g, and in such event the said shaft is provided witha fly wheel g for the purpose of regularizmg the movements. of thehandle.

' It will be understood that in place of the fly-wheel 9 could bemounted an electric a second shaft 71, the object of which will be seenlater on. The shaft 9 is provided at j with a hellcal pinion engagingwith a pinion j keyed to the cross shaft 7'. This cross-shaft y'" isprovided at each end with a pulley is.

Over each of the said pulleys 70 passes a chain or cable is. winding ona loose pulley is" mounted on a stationary shaft Z.

The p)ulleys is are controlled by pawls carried y the two drivingrollers or drums e, e which are also seen in Figures 1 and 3. Owing tothe combination of each pulley 7a with its corresponding driving roller,a free wheel device is obtained.

The shaft 9 is moreover" provided at its front portion with anothertoothed wheel m engaging with a pinion m keyed to the shaft section 1',which section, as already stated, could be extended rearwards for thepurpose of being driven by the electric motor if necessary.

The said shaft 2' is provided at o with the rotating shutter enablingthe light to be shut off at the moment of moving the film, as in anyprojection apparatus.

The said shutter is provided with a triangular cam 0' (Figure 6) Wllluh,during the rotation of the shaft z', and therefore of the shutter 0,produces the rising and descending movements of a frame 1).

To the said frame p is secured a spring blade 9 carrying the claws 1'.This blade is bent at the top at 1" in order to receive the action of aboss .9 secured to the shutter 0.

When the bent portion 1" is opposite the highest portion of the boss 8,the claws 1' are pushed to the right (Figure 7) and engage with theholes of the film, thus enabling the film to be driven downwards by themovement of the frame p. 1

On the contrary, when the bent portion 7" is on the less projectingportions of the boss 8, the claws are disengaged from the film, and theframe 3) can be moved without driving the film. v

The lighting can be done by means of an incandescent lamp to mounted ina holder u hinged at 'v to the top of the apparatus, owing to which thelamp can be withdrawn from the apparatus by turning the holder to, so asto examine the said lamp and replace it if necessary.

It will be understood that the apparatus can be worked without anyinconvenience in one or in the other direction, the film being moveddownwards or upwards at will.

Moreover, the film can be stopped instantaneously at any point of theprojection. It will be understood how important this arrangement wouldbefor the use of cinematographs for educational purposes, as theprofessor could leave the apparatus standing still in order to explainat greater length a view of the film, or turn back the film, if

his lesson requires him to refer again to a view already projected.

In the preceding description, no stress has been laid on certain detailparts which are obvious, such as for instance: the joint Z2 which can beof any desired suitable type,

the brake shoes or blocks w controlled by springs m pressing the filmagainst the driving rollers e e, the object glass y etc.; these are, infact, arrangements which do not offer any novel features and do not comewithin the invention.

WVe claim as our invention 1. Motion picture projecting apparatus,comprising a casing; a feeding reel and a receiving reel for the filmmounted externally of the casing at opposite sides thereof, each reelconsisting of a cylindrical core which is disposed in close proximity tothe adjacent side wall of the casing so that such Wall serves as aflange at the inner side of the core to prevent displacement of the filmfrom the core in an inward direction; driving rollers mounted atopposite sides of the casing forengagement with the film; and

mechanism within thecasing for driving said rollers.

2. Motionpicture projecting apparatus, comprising a casing; an objectiveconnected thereto; a feeding reel and a receiving reel for the filmmounted externally of the casing at opposite sides thereof; a pair ofdriving rollers mounted at opposite sides of the casing for engagementwith the film and so arranged that the film travels from the feedingreel over the roller on the same side of the casing, then forms anenlarged depending loop, then travels upwardly in a substantiallystraight line past the inner end of the objective, then forms anenlarged upwardly-directed loop, and then, passes around and beneath theroller on the other side of the casing and travels therefrom to thereceiving reel; and mechanism within the jecting end of said shaft forengagement with the film; and a pair of pulleys on said shaft havingpawls to engage and rotate said rollers.

In testimony whereof we have signed this specification.

RENE ADAM ERNEST LOUIS VICTOR REBILLON.

